The diagram shows a cup of milo sold in a school canteen. Which of the following could be the volume of the milo sold in the cup?

1. Estimate the volume of a standard cup of milo

A standard cup or mug holds about $200$ to $300\text{ ml}$ of liquid.

• $20\text{ ml}$ is too small (about a tablespoon).
• $20\text{ l}$ is too large (about a large bucket or water dispenser bottle).
• $200\text{ l}$ is extremely large (a bathtub).
  Therefore, $200\text{ ml}$ is the only reasonable estimate.